英文:
Copy a struct into a struct which implement an interface
问题
我目前正在尝试将一个结构体复制到另一个实现了接口的结构体中。我的代码如下：
package main
import (
"fmt"
)
type intf interface {
SaySomething(string)
LaunchTheDevice(origin)
}
type destination struct{
origin
}
func (dest *destination) SaySomething(s string) {
fmt.Println("I'm saying --> ", s)
}
func (dest *destination) LaunchTheDevice(theOrigin origin) {
*dest = theOrigin
}
type origin struct{
name string
value string
infos string
}
func main() {
firstValue := new(origin)
firstValue.name = "Nyan"
firstValue.value = "I'm the only one"
firstValue.infos = "I'm a cat"
secondValue := new(destination)
secondValue.LaunchTheDevice(*firstValue)
}
我希望函数LaunchTheDevice()设置destination的值。但是当我运行代码时，我得到以下错误：
cannot use theOrigin (type origin) as type destination in assignment
那么我该如何做呢？为什么我不能运行我的代码？我不明白，因为我可以输入：
dest.name = "a value"
dest.value = "another value"
dest.infos = "another value"
但是dest=theOrigin不起作用，尽管dest和theOrigin具有相同的结构体。
提前感谢！
英文:
I'm currently trying to copy a struct into another structure which implement an interface. My code is the following:
package main
import (
"fmt"
)
type intf interface {
SaySomething(string)
LaunchTheDevice(origin)
}
type destination struct{
origin
}
func (dest *destination) SaySomething(s string) {
fmt.Println("I'm saying --> ",s)
}
func (dest *destination) LaunchTheDevice(theOrigin origin) {
*dest = theOrigin
}
type origin struct{
name string
value string
infos string
}
func main() {
firstValue:= new(origin)
firstValue.name = "Nyan"
firstValue.value = "I'm the only one"
firstValue.infos = "I'm a cat"
secondValue := new(destination)
secondValue.LaunchTheDevice(*firstValue)
}
I want that the function LaunchTheDevice() set the values of destination. But when I run my code I get this error:
cannot use theOrigin (type origin) as type destination in assignment
So how can I do this? And why I can't run my code? I don't understand because I can type
dest.name = "a value"
dest.value = "another value"
dest.infos = "another value"
But dest=theOrigin doesn't work while dest have the same struct as theOrigin.
Thanks in advance!
答案1
得分: 3
字段origin是一个嵌入字段。应用程序可以使用以下代码设置该字段：
func (dest *destination) LaunchTheDevice(theOrigin origin) {
dest.origin = theOrigin
}
嵌入字段的名称与类型名称相同。
英文:
The field origin is an embedded field. The application can set the field using the following code:
func (dest *destination) LaunchTheDevice(theOrigin origin) {
dest.origin = theOrigin
}
The name of an embedded field is the same as the type name.
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